Mitsubishi Electric 700 Series, Instruction Manual

Page: 194 / 416

183
Frequency setting by analog input (terminal 1, 2, 4)
4
P
ARA
MET
E
RS
(2) Fault output ( Pr. 573 = "2")
When the analog input current drops to or below 2mA, the fault (E.LCI) is output and the inverter output is shutoff.
(3) Fault output after deceleration to stop ( Pr. 573 = "3")
When the analog input current drops to or below 2mA, the alarm (LF) is output and the motor decelerates to stop.
After it is stopped, the fault (E.LCI) is output.
When the input current rises again during the deceleration (including the cases when the 4mA current input is
invalid or no check is performed for the input current), the motor accelerates again to the set point and performs
normal operation.
CAUTION
· Changing the terminal assignment using
Pr. 190 to Pr. 196 (output terminal function selection)
may affect the other functions. Set
parameters after confirming the function of each terminal.
2mA
3mA
Output frequency
During external operation (
Pr. 573
= 1)
STF
Input current
decrease
Time
Return
Analog input
20mA
4mA
LF signal
Continuing the operation at the frequency
before the input current drop
Output frequency
Time
STF
20mA
4mA
LF signal
PID signal
Measured value
Set point (fixed)
Input current
decrease
2mA
3mA
Return
ON during input decrease
During PID control (reverse action) (
Pr. 573
= 1)
Continuing the operation at the frequency
before the input current drop
Output frequency
Time
STF
20mA
4mA
LF signal
PID signal
Measured value
Set point (fixed)
Input current
decrease
2mA
3mA
Return
During PID control (reverse action) (
Pr. 573
= 3)
ALM signal
An input current drop is detected and the motor
decelerates
E.LCI is output after the motor stops